Arrgh. Too many to list.
Batman standing on the skyscraper, right after Gordon finds Falcone strapped to the spotlight in Batman Begins.
Young Bruce falling down the well towards the viewer in Begins.
The Bat-Pod charging towards the Joker after Batman flips his truck in TDK.
Batman standing atop the bridge in TDKR. Even if it was a pointless scene, it still looked beautiful.
Alfred walking over to Bruce's chair in TDK, the morning after Rachel's death. The bluish glow adds to the somber feeling of the scene and the view from the window is gorgeous. I loved seeing Bruce look at his mask with tears in his eyes, knowing what the Batman has cost him.
Joker hanging out of the cop car in TDK.
The helicopter landing on Lau's skyscraper in TDK. It wasn't very iconic since it didn't feature Batman, but it looked amazing.
Bruce Wayne standing on the pillars being hit by members of the LoS in Begins.